Nut-lock



(Nb Model.)

A. D. HOLLAND.

NUT LOOK.

Patented Oct. 24, 1882 l VENTOR ATTORNEYS WITNESSES NHE STATES ATENTFries.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 266,476, dated October24, 1882,

Application filed July 22, 1882. (No model.)

To all whom it may concern:

3e it known that I, ANDERSON D. HOLLAND, a citizen of the United States,resident at Newport, in the county otJackson and State of Arkansas, haveinvented a new and valuable Improvement in Nut-Locks; and I do herebydeclare that the t'ollowingis at'ull,clear,and exact description of theconstruction and operation of the same, reference being bad totheannexed drawings, making apart of this specification, and to theletters and figures of reference marked thereon.

Figure l ofthe drawings is'a vertical cross sectional view. Fig. 2 is aside view. Fig. 3 is a horizontal section. Fig. 4 is a plan view, partlyin section. Figs. 5 and 6 are detail views.

This invention hast-elation to nut-locks; and it consists in the novelconstruction and arrangement of parts, as will he hereinafter fullydescribed, and particularly pointed out in the claims appended. I

In the accompanying drawings, the letter a designates the base bar orplate, which is cast in circular, square, or elongated form. Forrailroad use this plate is preferably oblong, and is provided with twoor more perforations, b, for the passage of the coupling-bolts c of thetrack. Winn the plate is designed to be applied to a single bolt it canbe made in circular or square form, and should have projections or ribson its under surface toengage the surface against which it bears topreventslipping. In the outer face of the plate is formed a straighttlat channel, d, tangent-to the perforation b and extending out to themargin of the plate, to provide an opening and passage for the insertionof a flattened key, It, between the plate and the nut c, which is placedthereon, engaging the bolt 0. In the bottom of the channel d is formedan oblique recess, 9, extending downward at the side of the perforationI), and at the inner end of the channel is formed as an offset to saidrecess a notchbearing, h. In the recess is seated the reversely-bentportion 1 of a spring, 8, which extends upward and inward obliquely, itsupper end projecting a little above the general surface of the plate.The spring is provided at the end of the reverse bend l with a short angular arm, a, which, when the reverse bend is sprung into position inthe recessseat g, bears against the offset-notch hand holds the springin firm position against the pressure of the under surface of the nut e.The nutis designed to be radially serrated on its under side, and theangular direction of the engaging end of the springs is backward andupward with reference to the open end of the channel d, so that when thenut is applied to the threaded end of the bolt and turned up theserrations will. pass readily over the yielding end of the spring. When,however, the nut is in position it will be prevented from turningbackward by the engagement of the spring with one of the serrations onits under side.

In order to disengage the spring, so as to permit the nut to beloosened, the key It; is introduced into the channel (I and pressed backin between the plate a and the under surface of the not until it engagesthe inclined face of the spring, pressing it down toward the channel andeti'ecting a disengagement from the base of the nut.

Having described this invention, what I claim, and desire to secure byLetters Patent, 1s-

1. The perforated base-plate having a channel, d, tangent to thepert'oration, a recess, 9, therein, and the oblique spring .9, having areverse bend, l, terminating in an angularly-bent varm, a, said bendseated in the recess of the plate and said arm engaging an ott'set-notchof said recess, substantially as specified.

2. The combination, with the spring 8, having the reverse bendl andangular arm n, and

the under serrated nut, e, of the perforated plate (1, its open-endchannel (I tangent to the perforation, the recess 9, and onset notch h,substantially as specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

ANDERSON D. HOLLAND.

\Vitnesses:

LAZAR Hmson, RUFUs L. BROWN.

